CN205901255U - Oil logging instrument protection device with backup circuit - Google Patents
Oil logging instrument protection device with backup circuit Download PDFInfo
- Publication number
- CN205901255U CN205901255U CN201620786033.8U CN201620786033U CN205901255U CN 205901255 U CN205901255 U CN 205901255U CN 201620786033 U CN201620786033 U CN 201620786033U CN 205901255 U CN205901255 U CN 205901255U
- Authority
- CN
- China
- Prior art keywords
- circuit
- detection module
- current detection
- joint
- stand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses an oil logging instrument protection device with backup circuit, including singlechip, main circuit and backup circuit. Including current detection module and MOS switch module in the main circuit, through oil logging instrument's power supply interface's under the current detection module measuring well output current, through singlechip receipt current detection module measuring electric current information, and when being greater than predetermined overload threshold value, the electric current controls the MOS switch module ends. When the main circuit broke down the inefficacy, the backup circuit that single chip microcomputer control is the same with main circuit structure worked to the reliability and the stability of device have been increased. The work that above -mentioned circuit functional module can be under high temperature environment ( more than or equal to 150 DEG C), and possess overcurrent protection and auto restore facility, do not need artificially to change the fuse, when having saved the manpower and materials cost, greatly improved oil well logging efficiency.
Description
Technical field
The utility model is related to petroleum exploration well logging field, more particularly, to has the oil well logging instrument protection of stand-by circuit
Device.
Background technology
Petroleum industry well logging lwd (logging while drilling) generally refers to measurement during drilling well
Formation rock physical parameter, and with data telemetry system, measurement result is delivered in real time ground and processed.Due to current data
The restriction of transmission technology, substantial amounts of data storage, in the memory of downhole instrument, plays back after trip-out.Measurement while drilling mwd
(measurement while drilling) generally refers to drilling engineering parameter measurement, as hole deviation, orientation and tool-face etc.
Measurement.Sometimes, mwd refers to all of underground survey during drilling well.
Due to well logging obtain formation parameter be just to have bored the formation parameter opened, it closest to the reset condition on stratum,
For more favourable than general wireline logging to the oil-containing of bad ground, gas evaluation.Connector for logging while drilling is placed in drill collar, except measurement
Outside the conventional loggings such as resistivity, the velocity of sound, neutron porosity, density and some imaging loggings, also measurement the pressure of the drill, moment of torsion, rotating speed, ring
Pneumatics power, temperature, the drilling parameter such as chemical composition.Bad environments in drill bit drilling process, temperature is very high, and pressure greatly, vibrates
Strongly, downhole temperature often reaches more than 150 DEG C, and therefore, the requirement to the high temperature resistant property of downhole petroleum logger is higher.
Common downhole petroleum logger includes: magnetic compass list, multishot instrument, steering tool, no
Line directional tool, EMI, photograph list, multiple spot gyrolevel, electronic gyroscope inclinometer etc..
Oil well logging instrument is during downhole drill, if running into harder rock or the short-circuit feelings of circuit appearance
Condition, system operating current can increase suddenly, can burn out electronic circuit when serious, affects construction speed.At present conventional method be
System power supply end seals in a fuse, and if there is over-current phenomenon avoidance, fuse fuses automatically, protects electronic circuit.But this
Kind of fuse is only capable of protection once, has blown and has needed to change, and when changing fuse, needs to interrupt construction, and by whole string instrument from
Well head is brought up, and wastes time and energy.The operating temperature range of most of on the market resettable fuses is between -40 DEG C to 85 at present
DEG C, also cannot meet and be actually needed.
Utility model content
In order to solve above-mentioned technical problem, provide one kind can be more than or equal to 150 DEG C of work in high temperature environments, possess
Stream protection and the automatic device recovering, the utility model provides a kind of oil well logging instrument protection dress with stand-by circuit
Put, including circuit board 4, described circuit board is provided with single-chip microcomputer 42, main circuit and stand-by circuit, described main circuit includes first
Current detection module 41 and a mos switch module 43, described stand-by circuit includes the second current detection module 411 and second
Mos switch module 431,
Described single-chip microcomputer 42 is examined with described first current detection module 41, a mos switch module 43, the second electric current respectively
Survey module 411 and the 2nd mos switch module 431 connects；
Described first current detection module 41 and the confession with downhole petroleum logger 8 respectively of the second current detection module 42
Electrical interface 81 connects, and is used to measure the output current of the power supply interface 81 of downhole petroleum logger 8；
A described mos switch module 43 and the 2nd mos switch module 431 are both connected to downhole petroleum logger 8
In power supply output circuit；
Described single-chip microcomputer 42 controls described stand-by circuit to be in open-circuit condition when described main circuit works, and described monolithic
Machine 42 controls described stand-by circuit work when judging described main circuit inefficacy；
When described main circuit works, described single-chip microcomputer 42 is receiving the electricity of described first current detection module 41 measurement
A described mos switch module 43 is controlled to end when stream is more than default overloading threshold.
Further, described single-chip microcomputer 42 controls a described mos switch module 43 to turn on after the scheduled time, connects again
Receive the current information of the first current detection module 41 measurement, and judge whether the electric current receiving again is less than described overloading threshold,
If so, described mos switch module 43 is then controlled to turn on, if it is not, then controlling described mos switch module 43 to end.
Further, described single-chip microcomputer 42 is judging that described first current detection module 41 lost efficacy or a described mos opens
When closing module 43 inefficacy, control described 2nd mos switch module 431 to turn on, receiving described second current detection module 411
The electric current of measurement controls described 2nd mos switch module 431 to end when being more than default overloading threshold.
Further, described first current detection module 41 includes the first current detecting chip for detecting size of current
44.
Further, described first current detection module 41 also includes current amplifier 45, and described current amplifier 45 is used
Output current in the power supply interface 81 to measurement downhole petroleum logger 8 is amplified.
Further, described second current detection module includes the second current detecting chip for detecting size of current.
Further, described second current detection module also includes the second current amplifier, described second current amplifier
Output current for the power supply interface to measurement downhole petroleum logger is amplified.
Further, shell and cover plate are also included, described inside the shell offers the groove for accommodating described circuit board, institute
State circuit board to be arranged in described groove.
Further, the first joint and the second joint are also included, described first joint and the second joint are separately positioned on institute
State the two ends of shell, and described first joint and the second joint are all connected with described circuit board.
Further, also include collar, described collar is arranged on outside described second joint, described collar and described shell
It is flexibly connected.
Further, described shell is cylinder.
Further, described first joint is three adapters, and described second joint is ten adapters, and described second joint
It is connected with described collar.
Further, when the operating current of described downhole petroleum logger is 1a-1.5a, described overloading threshold is 3a.
Further, when the operating current of described downhole petroleum logger is 200ma-1a, described overloading threshold is 2a.
Device of the present utility model is provided with single-chip microcomputer, main circuit and stand-by circuit.Main circuit includes current detecting mould
Block and mos switch module, are measured the output current of the power supply interface of downhole petroleum logger, pass through by current detection module
Single-chip microcomputer receives the current information of current detection module measurement, and controls described when described electric current is more than default overloading threshold
Mos switch module ends.When main circuit breaks down inefficacy, Single-chip Controlling and main circuit structure identical stand-by circuit work
Make, thus increased the reliability and stability of device.Foregoing circuit functional module can be in high temperature environments (more than or equal to 150
DEG C) work and possess overcurrent protection and auto restore facility.
In addition, the utility model is also provided with shell and two interfaces, circuit board is arranged on inside the shell, makes the steady of device
Qualitative higher, versatility more preferably, is convenient for changing.
By overcurrent protective device of the present utility model, oil well logging instrument, during downhole drill, works in system
When electric current increases suddenly, can disconnecting circuit in time, protect oil well logging instrument, when electric current recovers normal, single-chip microcomputer meeting again
Automatically control mos switch module and recover conducting, make circuit normal power supply it is not necessary to artificially change fuse, save manpower thing
While power cost, drastically increase oil well logging efficiency.
Brief description
In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art and advantage, below will be right
In embodiment or description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, below describe in attached
Figure is only some embodiments of the present utility model, for those of ordinary skill in the art, is not paying creative work
On the premise of, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the decomposing schematic representation of the device that the utility model provides；
Fig. 2 is the structured flowchart of circuit board of the present utility model.
In figure: 1- shell, 2- first joint, 3- second joint, 4- circuit board, 41- first current detection module, 411-
Two electric circuit inspection modules, 42- single-chip microcomputer, 43- the mos switch module, 431- the 2nd mos switch module, 44- current detecting core
Piece, 45- current amplifier, 5- cover plate, 6- collar, 7- groove, 8- downhole petroleum logger, 81- power supply interface.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely description is it is clear that described embodiment is only a part of embodiment of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the premise of creative work
Lower obtained every other embodiment, broadly falls into the scope of the utility model protection.
Embodiment one:
Refer to Fig. 1, Fig. 2, the utility model embodiment provides a kind of oil well logging instrument with stand-by circuit and protects
Protection unit, including circuit board 4, described circuit board is provided with single-chip microcomputer 42, main circuit and stand-by circuit, described main circuit includes
First current detection module 41 and a mos switch module 43, described stand-by circuit includes the second current detection module 411 and
Two mos switch modules 431,
Described single-chip microcomputer 42 is examined with described first current detection module 41, a mos switch module 43, the second electric current respectively
Survey module 411 and the 2nd mos switch module 431 connects；
Described first current detection module 41 and the confession with downhole petroleum logger 8 respectively of the second current detection module 42
Electrical interface 81 connects, and is used to measure the output current of the power supply interface 81 of downhole petroleum logger 8；
A described mos switch module 43 and the 2nd mos switch module 431 are both connected to downhole petroleum logger 8
In power supply output circuit；
Described single-chip microcomputer 42 controls described stand-by circuit to be in open-circuit condition when described main circuit works, and described monolithic
Machine 42 controls described stand-by circuit work when judging described main circuit inefficacy；
When described main circuit works, described single-chip microcomputer 42 is receiving the electricity of described first current detection module 41 measurement
A described mos switch module 43 is controlled to end when stream is more than default overloading threshold.
Further, described first current detection module 41 includes the first current detecting chip for detecting size of current
44.
Further, described first current detection module 41 also includes current amplifier 45, and described current amplifier 45 is used
Output current in the power supply interface 81 to measurement downhole petroleum logger 8 is amplified.
Further, described second current detection module includes the second current detecting chip for detecting size of current.
Further, described second current detection module also includes the second current amplifier, described second current amplifier
Output current for the power supply interface to measurement downhole petroleum logger is amplified.
Further, also include shell 1 and cover plate 5, offer for accommodating the recessed of described circuit board 4 in described shell 1
Groove 7, described circuit board 4 is arranged in described groove 7.
Further, the first joint 2 and the second joint 3 are also included, described first joint 2 and the second joint 3 are respectively provided with
At the two ends of described shell 1, and described first joint 2 and the second joint 3 are all connected with described circuit board 4.
Further, also include collar 6, described collar 6 is arranged on outside described second joint 3, described collar 6 with described
Shell 1 is flexibly connected.
Further, described shell 1 is cylinder.
Further, described first joint 2 is three adapters, and described second joint 3 is ten adapters, and described second connects
3 are connected with described collar 6.
Further, when the operating current of described downhole petroleum logger 8 is 1a-1.5a, described overloading threshold is 3a.
Device of the present utility model is provided with single-chip microcomputer, main circuit and stand-by circuit.Main circuit includes current detecting mould
Block and mos switch module, are measured the output current of the power supply interface of downhole petroleum logger, pass through by current detection module
Single-chip microcomputer receives the current information of current detection module measurement, and controls described when described electric current is more than default overloading threshold
Mos switch module ends.When main circuit breaks down inefficacy, Single-chip Controlling and main circuit structure identical stand-by circuit work
Make, thus increased the reliability and stability of device.Foregoing circuit functional module can be in high temperature environments (more than or equal to 150
DEG C) work and possess overcurrent protection and auto restore facility.
In addition, the utility model is also provided with shell and two interfaces, circuit board is arranged on inside the shell, makes the steady of device
Qualitative higher, versatility more preferably, is convenient for changing.
By overcurrent protective device of the present utility model, oil well logging instrument, during downhole drill, works in system
When electric current increases suddenly, can disconnecting circuit in time, protect oil well logging instrument, when electric current recovers normal, single-chip microcomputer meeting again
Automatically control mos switch module and recover conducting, make circuit normal power supply it is not necessary to artificially change fuse, save manpower thing
While power cost, drastically increase oil well logging efficiency.
Embodiment two:
Refer to Fig. 1, Fig. 2, the utility model embodiment provides a kind of oil well logging instrument with stand-by circuit and protects
Protection unit, including circuit board 4, described circuit board is provided with single-chip microcomputer 42, main circuit and stand-by circuit, described main circuit includes
First current detection module 41 and a mos switch module 43, described stand-by circuit includes the second current detection module 411 and
Two mos switch modules 431,
Described single-chip microcomputer 42 is examined with described first current detection module 41, a mos switch module 43, the second electric current respectively
Survey module 411 and the 2nd mos switch module 431 connects；
Described first current detection module 41 and the confession with downhole petroleum logger 8 respectively of the second current detection module 42
Electrical interface 81 connects, and is used to measure the output current of the power supply interface 81 of downhole petroleum logger 8；
A described mos switch module 43 and the 2nd mos switch module 431 are both connected to downhole petroleum logger 8
In power supply output circuit；
Described single-chip microcomputer 42 controls described stand-by circuit to be in open-circuit condition when described main circuit works, and described monolithic
Machine 42 controls described stand-by circuit work when judging described main circuit inefficacy；
When described main circuit works, described single-chip microcomputer 42 is receiving the electricity of described first current detection module 41 measurement
A described mos switch module 43 is controlled to end when stream is more than default overloading threshold.
Further, described single-chip microcomputer 42 controls a described mos switch module 43 to turn on after the scheduled time, connects again
Receive the current information of the first current detection module 41 measurement, and judge whether the electric current receiving again is less than described overloading threshold,
If so, described mos switch module 43 is then controlled to turn on, if it is not, then controlling described mos switch module 43 to end.
Further, described single-chip microcomputer 42 is judging that described first current detection module 41 lost efficacy or a described mos opens
When closing module 43 inefficacy, control described 2nd mos switch module 431 to turn on, receiving described second current detection module 411
The electric current of measurement controls described 2nd mos switch module 431 to end when being more than default overloading threshold.
Further, described first current detection module 41 includes the first current detecting chip for detecting size of current
44.
Further, described first current detection module 41 also includes current amplifier 45, and described current amplifier 45 is used
Output current in the power supply interface 81 to measurement downhole petroleum logger 8 is amplified.
Further, described second current detection module includes the second current detecting chip for detecting size of current.
Further, described second current detection module also includes the second current amplifier, described second current amplifier
Output current for the power supply interface to measurement downhole petroleum logger is amplified.
Further, also include shell 1 and cover plate 5, offer for accommodating the recessed of described circuit board 4 in described shell 1
Groove 7, described circuit board 4 is arranged in described groove 7.
Further, the first joint 2 and the second joint 3 are also included, described first joint 2 and the second joint 3 are respectively provided with
At the two ends of described shell 1, and described first joint 2 and the second joint 3 are all connected with described circuit board 4.
Further, also include collar 6, described collar 6 is arranged on outside described second joint 3, described collar 6 with described
Shell 1 is flexibly connected.
Further, described shell 1 is cylinder.
Further, described first joint 2 is three adapters, and described second joint 3 is ten adapters, and described second connects
3 are connected with described collar 6.
Further, when the operating current of described downhole petroleum logger 8 is 1a-1.5a, described overloading threshold is 3a.
Device of the present utility model is provided with single-chip microcomputer, main circuit and stand-by circuit.Main circuit includes current detecting mould
Block and mos switch module, are measured the output current of the power supply interface of downhole petroleum logger, pass through by current detection module
Single-chip microcomputer receives the current information of current detection module measurement, and controls described when described electric current is more than default overloading threshold
Mos switch module ends.When main circuit breaks down inefficacy, Single-chip Controlling and main circuit structure identical stand-by circuit work
Make, thus increased the reliability and stability of device.Foregoing circuit functional module can be in high temperature environments (more than or equal to 150
DEG C) work and possess overcurrent protection and auto restore facility.
In addition, the utility model is also provided with shell and two interfaces, circuit board is arranged on inside the shell, makes the steady of device
Qualitative higher, versatility more preferably, is convenient for changing.
By overcurrent protective device of the present utility model, oil well logging instrument, during downhole drill, works in system
When electric current increases suddenly, can disconnecting circuit in time, protect oil well logging instrument, when electric current recovers normal, single-chip microcomputer meeting again
Automatically control mos switch module and recover conducting, make circuit normal power supply it is not necessary to artificially change fuse, save manpower thing
While power cost, drastically increase oil well logging efficiency.
The above is preferred embodiment of the present utility model it is noted that ordinary skill for the art
For personnel, on the premise of without departing from the utility model principle, some improvements and modifications can also be made, these improve and moisten
Decorations are also considered as protection domain of the present utility model.
Claims (8)
1. there is the oil well logging instrument protection device of stand-by circuit it is characterised in that including circuit board (4), described circuit board
On be provided with single-chip microcomputer (42), main circuit and stand-by circuit, described main circuit includes the first current detection module (41) and first
Mos switch module (43), described stand-by circuit includes the second current detection module (411) and the 2nd mos switch module (431),
Described single-chip microcomputer (42) respectively with described first current detection module (41), a mos switch module (43), the second electric current
Detection module (411) and the 2nd mos switch module (431) connect；
Described first current detection module (41) and the second current detection module (42) respectively with downhole petroleum logger (8)
Power supply interface (81) connects；
A described mos switch module (43) and the 2nd mos switch module (431) are both connected to downhole petroleum logger (8)
Power supply output circuit in.
2. the oil well logging instrument protection device with stand-by circuit according to claim 1 is it is characterised in that also include
Shell (1) and cover plate (5), offer the groove (7) for accommodating described circuit board (4), described circuit board in described shell (1)
(4) it is arranged in described groove (7).
3. the oil well logging instrument protection device with stand-by circuit according to claim 2 is it is characterised in that also include
First joint (2) and the second joint (3), described first joint (2) and the second joint (3) are separately positioned on described shell (1)
Two ends, and described first joint (2) and the second joint (3) be all connected with described circuit board (4).
4. the oil well logging instrument protection device with stand-by circuit according to claim 3 is it is characterised in that also include
Collar (6), described collar (6) is arranged on outside described second joint (3), and described collar (6) is with described shell (1) activity even
Connect.
5. the oil well logging instrument protection device with stand-by circuit according to claim 4 is it is characterised in that described
One current detection module (41) includes the first current detecting chip (44) for detecting size of current.
6. the oil well logging instrument protection device with stand-by circuit according to claim 5 is it is characterised in that described
One current detection module (41) also includes current amplifier (45).
7. the oil well logging instrument protection device with stand-by circuit according to claim 6 is it is characterised in that described outer
Shell (1) is cylinder.
8. the oil well logging instrument protection device with stand-by circuit according to claim 6 is it is characterised in that described
One joint (2) is three adapters, and described second joint (3) is ten adapters, and described second joint (3) and described collar (6)
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620786033.8U CN205901255U (en) | 2016-07-25 | 2016-07-25 | Oil logging instrument protection device with backup circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620786033.8U CN205901255U (en) | 2016-07-25 | 2016-07-25 | Oil logging instrument protection device with backup circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205901255U true CN205901255U (en) | 2017-01-18 |
Family
ID=57785090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620786033.8U Expired - Fee Related CN205901255U (en) | 2016-07-25 | 2016-07-25 | Oil logging instrument protection device with backup circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205901255U (en) |
-
2016
- 2016-07-25 CN CN201620786033.8U patent/CN205901255U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7096961B2 (en) | Method and apparatus for performing diagnostics in a wellbore operation | |
| CA1255358A (en) | Well bore data transmission system | |
| CN102031962B (en) | System and method for measuring downhole micro-flow of oil and gas well | |
| CA2593103C (en) | Short circuit protection for serially connected nodes in a hydrocarbon exploration or production electrical system | |
| US20150101866A1 (en) | Ambient-activated switch for downhole operations | |
| CN108442919A (en) | The nearly drill bit multiparameter measuring device of memory-type | |
| CN116209817A (en) | Downhole tool sensor arrangements and associated methods and systems | |
| CN116157581A (en) | Downhole sensor apparatus and related systems, apparatus, and methods | |
| CN205901254U (en) | Logging while drilling instrument protection device based on sampling resistor | |
| CN106368680B (en) | Wireless measurement while drilling device | |
| CN108678733A (en) | Nearly drill bit multi-parameter drilling measuring equipment, method and device | |
| CN106099838A (en) | Connector for logging while drilling protection device based on sampling resistor | |
| CN205901255U (en) | Oil logging instrument protection device with backup circuit | |
| CN205901256U (en) | Logging while drilling instrument circuit protection device | |
| CN205901258U (en) | Logging instrument circuit protection device with alarming function | |
| CN205901253U (en) | Oil logging instrument circuit protection device based on singlechip | |
| CN106099837A (en) | There is the oil well logging instrument protection device of stand-by circuit | |
| CN106321079B (en) | Rotary test nipple for measurement while drilling instrument | |
| EP2569603B1 (en) | Determining the order of devices in a downhole string | |
| CN106207948A (en) | There is the logger circuit protection device of warning function | |
| CN205901257U (en) | A overcurrent protect device for oil logging instrument in pit | |
| CN106058795A (en) | Petroleum logging instrument circuit protective device based on single-chip microcomputer | |
| CN116220663A (en) | Miniaturized underground temperature and pressure measurer resistant to ultrahigh temperature and ultrahigh pressure | |
| CN106159877A (en) | A kind of connector for logging while drilling circuit protection device | |
| CN107448187A (en) | Underground survey device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170118 Termination date: 20210725 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |